Can you shed bit more light on these please ? I saw some chinese TPMS kit on Deal Extreme & was in a dilemma whether to go for it or not. Your opinions will give me confidence in venturing one for my Swiftee.

Let me know if you want any additional details.
I'm not too familiar with the Chinese TPMS products to comment but I'd be a little wary of their poor quality in general since a valve failure could be critical.
You should be good if you can stick with a well known brand (even if they are made in China) than some no-name Chinese crap.

Side Note: My Tucson is retrofitted with a different kind of TPMS sensor (BMW OE) and a DIY wireless receiver and interface to work directly with the CarPuter. The screenshots that you see in the Nitrogen vs Normal Air thread are from the Tucson install.